Range-boiler.



No. 690,628. Patented 1an.; |902.v 1 A. c. BADGER.

RANGE BILER.Y

(Application led Feb. 10, 1900.)

(Nu Model.)

' lim/ENTER:

Q We.

f7/ZM,

`TH: Nonms PETERS CO.. Pnooprvko.. wAsulNGTbN. n. V

UNITED STATES PATENT OFFICE.

ARTHUR C. B'ADGER, OF BOSTON, MASSACHUSETTS.

RANGE-BOILER.

SPECIFICATION forming part of Lettersiiatent No. 690,628, dated January '7, 1902. Application iled February 10, 1900.y Serial No. 4,759. (No model.)

To @ZZ whom, it may concern:

Be it known that I, ARTHUR C. BADGER, of

Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Range-Boilers, of which the following is a specification.

This invention relates to domestic range or water-heating boilers; and its object is to provide a strengthened and reinforced joint of a novel character in boilers of this'kind. The invention consists in certain novel features of construction and arrangement hereinafter described and claimed.

The accompanying drawing represents a vertical sectional view of a boiler constructed in accordance with my invention.

l is the cylindrical portion or body of the boiler-shell, and 2 3 are the top and bottom heads, respectively. Referring to the joint between the body l and the top head 2, the same is constructed with two outer layers 4 5, consisting of the overlapping edges of said body and head, and an inner third layer consisting of a sheet-rnetal reinforcing annular band or ring 6, one edge of which extends beyond the edge of the body layer "5. The three layers are conformably beaded or corrugated circumferentially to maintain a secure hold upon each other against longitudinal separating strains, and a tight joint is secured by introducing solder between the layers of the joint. It is to be noted that a marginal lip 7 is turned inwardly on the upper edge ofthe reinforcing-ring 6, leaving a space 8 between it and the head 2, at the bottom of which space is located the upper edge of the middle or body layer 5. Since the edge of the inner layer projects or extends beyond the edge of the body layer 5, the space Sis formed beyond the edge of said body or intermedii ate layer 5 and between the extended edge of the inner or ring layer 6 and the inner surface of thel outer layer 4. The preferred method of soldering the joint is to introduce a ring of solder which shall occupy the space 8 when the parts are tted together and then by applying heat to the outside of the boiler melt the solder and causejtto iiow into the crevices between the three layers 4 5 6 of the joint. Owing to the fact that the three layers are conformably beaded and corrugated, so as to be in close contact throughout the overlapped portion, there is practically no opportunity for the escape of the solder from between the crevices mentioned. In this way the parts l and 2 to be joined are firmly united lto each other and tothe reinforcing= ring. The` sheet metal reinforcing ring strengthens the joint, while at the same time retaining compactness andlight-ness therein. 6o

The above construction is applicable to the joints at both ends of the boiler or elsewhere thereon and is carried out at the lower end the same as at the upper end, as seen in the drawing. In addition a ring 9 may be soldered externally to the lower end of the boiler "to serve as a base.

I claimv `In a range-boiler, a joint having two outer layers consisting of the overlapping margins of the shell'parts to be joined, and an inner third layer consisting of a sheet-metal rein;v

ARTHUR O. BADGER.

Vtitnesses:

P. W. PEZZETTI, R. M. PIERsoN. 

